Brainliest to whoever gets this correct.

Mathematics

1 answer:

frez [133]3 years ago

3 0

Answer:

see below

Step-by-step explanation:

The general left-to-right downward slant tells you the function is odd degree with a negative leading coefficient. Only one answer choice matches: choice C.

Additionally, the "touch" of the x-axis at x=0 tells you x^2 is one of the factors of the function. The two sign changes are consistent with 2 (or 0) positive real roots. If signs of odd-degree terms are reversed, then the one sign change tells you there is one negative real root.

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Fill in the blanks. Optionshouse tracked the performance of their most active day traders and found that the probability of a wi

Aleksandr [31]

Answer:

If in a day, 458 call options are picked by these traders, around 246.2 of them will be winners, give or take 10.67 .

Step-by-step explanation:

Hello!

Your study variable is X: the number of winning calls in a sample of 458 calls.

The variable has a binomial distribution since you have two possible outcomes, that the call is a winning call (success) or that the call is not a winning call (failure), each call is independent and the probability of success is p= 0.5375 and the probability of failure q= 1-p= 1-0.5375= 0.4625.

The expected value for a binomial distribution is

E(X)= n*p= 458 * 0.5375= 246.175

And to know the standard error (or standard deviation) you have to calculate the square root of the variance:

V(X)= n*p*q= 458*0.5375*0.4625= 113.85

√V(X)= √113.85= 10.67

I hope it helps!

3 0

3 years ago

What does x+3y=4x-1y equal if x is 6

fredd [130]

Step-by-step explanation:

this is the work, written out for you.